I have an IBM x336 that is not advertising the proper LINK speeds. One interface is the other is not. I've tried to Force it to 1000/Full but then it just shows link down. I have confirmed the switch is set to auto negotiate like my switches. I have also changed out my Ethernet Cables. I'm at a loss where to look further. I have verified that it will connect at 1G on a different swtich. This also has happened on two different servers on the same switch.

@Squidly You needn't edit the title to [sovled]. Please post an answer indicating the correct resolution and mark it as accepted.
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jscottNov 29 '11 at 16:39

@Squidly If you fix your own problem, the correct thing to do is answer your own question and accept it (if one of the answers already doesn't solve it). This will mark the question as correctly answered and will make it easier for others to find it useful in the future.
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MDMarraNov 29 '11 at 16:40

Changing Ports was the First thing I did. I have not tried to force to 1000/Full on both sides, I will try that. 0 Errors in the interfaces. With an uptime 14 days. The time when this server was installed.
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SquidlyNov 28 '11 at 6:19

You have two options:
Set both speed and duplex mode to autonegotiation on the server and the switch. Make sure that neither speed or duplex mode is fixed on any side!

OR

Fix them both at 1G/FDX.

Setting one of the two to autonegotiation and the other one to a fixed setting will not work, be it speed or duplex. You either get a very, very slow connection (DX mismatch) or none at all (speed mismatch).